CA2428725A1 - Method for recovering hydrocarbons from tar sands and oil shales - Google Patents
Method for recovering hydrocarbons from tar sands and oil shales Download PDFInfo
- Publication number
- CA2428725A1 CA2428725A1 CA002428725A CA2428725A CA2428725A1 CA 2428725 A1 CA2428725 A1 CA 2428725A1 CA 002428725 A CA002428725 A CA 002428725A CA 2428725 A CA2428725 A CA 2428725A CA 2428725 A1 CA2428725 A1 CA 2428725A1
- Authority
- CA
- Canada
- Prior art keywords
- hydrocarbons
- oxidant
- released
- comminuted
- reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229930195733 hydrocarbon Natural products 0.000 title abstract 6
- 150000002430 hydrocarbons Chemical class 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 2
- 235000015076 Shorea robusta Nutrition 0.000 title 1
- 244000166071 Shorea robusta Species 0.000 title 1
- 239000007800 oxidant agent Substances 0.000 abstract 3
- 230000001590 oxidative effect Effects 0.000 abstract 3
- 239000000758 substrate Substances 0.000 abstract 3
- 239000004215 Carbon black (E152) Substances 0.000 abstract 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 2
- 239000002002 slurry Substances 0.000 abstract 2
- 239000010426 asphalt Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000011109 contamination Methods 0.000 abstract 1
- 150000002894 organic compounds Chemical class 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 238000007670 refining Methods 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/02—General arrangement of separating plant, e.g. flow sheets specially adapted for oil-sand, oil-chalk, oil-shales, ozokerite, bitumen, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
- C10G1/04—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by extraction
- C10G1/047—Hot water or cold water extraction processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G27/00—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation
- C10G27/04—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation with oxygen or compounds generating oxygen
- C10G27/12—Refining of hydrocarbon oils in the absence of hydrogen, by oxidation with oxygen or compounds generating oxygen with oxygen-generating compounds, e.g. per-compounds, chromic acid, chromates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G3/00—Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids
- C10G3/40—Thermal non-catalytic treatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
- C10G31/06—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for by heating, cooling, or pressure treatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
- C10G31/10—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for with the aid of centrifugal force
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/262—Separation of sediment aided by centrifugal force or centripetal force by using a centrifuge
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/40—Characteristics of the process deviating from typical ways of processing
- C10G2300/4006—Temperature
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/80—Additives
- C10G2300/802—Diluents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/80—Additives
- C10G2300/805—Water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
- Y02P30/20—Technologies relating to oil refining and petrochemical industry using bio-feedstock
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Wood Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Geology (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A method for treating hydrocarbonaceous deposits to recover a petroleum-like hydrocarbon portion and a cleaned particulate substrate portion.
Hydrocarbonaceous ore containing bitumen and/or kerogen is crushed or otherwise comminuted to sand sized particles or smaller. The comminuted ore is mixed with water in a slurry hopper (11) to form a slurry (12), heated to between 60~C and 100~C in a first reactor vessel (14), and blended with oxidant solution (16), preferably hydrogen peroxide. In the presence of the oxidant free interstitial hydrocarbons and those hydrocarbons bound electrostatically to the surface of the substrate are released in an electrophysical reaction. Some of the released hydrocarbons and in particular bituminous and kerogenic compounds are then controllably cleaved by the oxidant in a limited Fenton's reaction to yield organic compounds having lower average molecular weights which are suitable for refining as oil. The cleaned particulate substrate substantially free of hydrocarbon contamination is environmentally suitable for landfill.
Hydrocarbonaceous ore containing bitumen and/or kerogen is crushed or otherwise comminuted to sand sized particles or smaller. The comminuted ore is mixed with water in a slurry hopper (11) to form a slurry (12), heated to between 60~C and 100~C in a first reactor vessel (14), and blended with oxidant solution (16), preferably hydrogen peroxide. In the presence of the oxidant free interstitial hydrocarbons and those hydrocarbons bound electrostatically to the surface of the substrate are released in an electrophysical reaction. Some of the released hydrocarbons and in particular bituminous and kerogenic compounds are then controllably cleaved by the oxidant in a limited Fenton's reaction to yield organic compounds having lower average molecular weights which are suitable for refining as oil. The cleaned particulate substrate substantially free of hydrocarbon contamination is environmentally suitable for landfill.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/451,293 | 1999-11-30 | ||
US09/451,293 US6251290B1 (en) | 1997-02-27 | 1999-11-30 | Method for recovering hydrocarbons from tar sands and oil shales |
PCT/US2000/031926 WO2001039904A1 (en) | 1999-11-30 | 2000-11-20 | Method for recovering hydrocarbons from tar sands and oil shales |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2428725A1 true CA2428725A1 (en) | 2001-06-07 |
CA2428725C CA2428725C (en) | 2006-01-24 |
Family
ID=23791633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002428725A Expired - Fee Related CA2428725C (en) | 1999-11-30 | 2000-11-20 | Method for recovering hydrocarbons from tar sands and oil shales |
Country Status (4)
Country | Link |
---|---|
US (2) | US6251290B1 (en) |
AU (1) | AU1626301A (en) |
CA (1) | CA2428725C (en) |
WO (1) | WO2001039904A1 (en) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050054507A1 (en) * | 1996-10-15 | 2005-03-10 | Cornay Paul J. | Concentric tubular centrifuge |
US6966874B2 (en) * | 1997-10-14 | 2005-11-22 | Erth Technologies, Inc. | Concentric tubular centrifuge |
US6576145B2 (en) * | 1997-02-27 | 2003-06-10 | Continuum Environmental, Llc | Method of separating hydrocarbons from mineral substrates |
US6951248B2 (en) * | 2001-07-12 | 2005-10-04 | Continuum Environmental, Llc | Method of separating oil from geological formations |
CA2433522C (en) * | 2002-06-25 | 2013-08-27 | Pat Page | Surfactant for bitumen separation |
US7241256B2 (en) | 2003-08-30 | 2007-07-10 | Erth Technologies, Inc. | Centrifuge |
US20050178733A1 (en) * | 2003-12-30 | 2005-08-18 | Conger Harry C. | Sub-critical oxidative processes |
US7559372B2 (en) | 2004-04-13 | 2009-07-14 | Coriba Technologies, L.L.C. | Composition and process for enhanced oil recovery |
US7628909B2 (en) * | 2004-09-27 | 2009-12-08 | Coriba Technologies, L.L.C. | Composition and process for the extraction of bitumen from oil sands |
US20080169222A1 (en) | 2004-10-15 | 2008-07-17 | Kevin Ophus | Removel Of Hydrocarbons From Particulate Solids |
US7931816B2 (en) * | 2004-12-29 | 2011-04-26 | Acos Llc | Method, apparatus and systems for treating contaminants in a waste fluid |
US7678201B2 (en) * | 2005-07-22 | 2010-03-16 | Coriba Technologies, L.L.C. | Composition and process for the removal and recovery of hydrocarbons from substrates |
WO2008043785A1 (en) * | 2006-10-10 | 2008-04-17 | Bioecon International Holding N.V. | Two-stage process for the conversion of tar sand to liquid fuels and specialty chemicals |
US7694829B2 (en) | 2006-11-10 | 2010-04-13 | Veltri Fred J | Settling vessel for extracting crude oil from tar sands |
US20080121566A1 (en) * | 2006-11-24 | 2008-05-29 | Tarsands Recovery Ltd. | Surfactant for bitumen separation |
US20080185350A1 (en) * | 2007-02-05 | 2008-08-07 | Koch-Glitsch, Lp | Method and apparatus for separating oil sand particulates from a three-phase stream |
SG172284A1 (en) | 2008-12-19 | 2011-07-28 | Xyleco Inc | Processing biomass |
US20110049063A1 (en) | 2009-08-12 | 2011-03-03 | Demayo Benjamin | Method and device for extraction of liquids from a solid particle material |
BR112013015960A2 (en) | 2010-12-22 | 2018-07-10 | Chevron Usa Inc | on-site kerogen recovery and conversion |
US8701788B2 (en) | 2011-12-22 | 2014-04-22 | Chevron U.S.A. Inc. | Preconditioning a subsurface shale formation by removing extractible organics |
US8950932B2 (en) | 2012-03-01 | 2015-02-10 | Zeta Global, Ltd. | Systems and methods for recovering hydrocarbons |
WO2015016642A1 (en) * | 2013-08-01 | 2015-02-05 | 주식회사 엘지화학 | Conductor composition, slurry composition for forming electrode of lithium secondary battery using same, and lithium secondary battery |
US10184084B2 (en) | 2014-12-05 | 2019-01-22 | USO (Utah) LLC | Oilsands processing using inline agitation and an inclined plate separator |
CN104399742B (en) * | 2014-12-09 | 2017-06-13 | 上田环境修复股份有限公司 | A kind of method for strengthening Fenton oxidation renovation of organic pollution soil |
WO2017132524A1 (en) | 2016-01-29 | 2017-08-03 | Ecolab Usa Inc. | Methods for enhancing hydrocarbon recovery from oil sands |
JP7051372B2 (en) | 2017-11-01 | 2022-04-11 | 東洋エンジニアリング株式会社 | Hydrocarbon separation method and equipment |
CN108543808B (en) * | 2018-03-21 | 2021-07-27 | 轻工业环境保护研究所 | Method for jointly degrading polycyclic aromatic hydrocarbon pollutants in soil by utilizing chemical oxidation-anaerobic microorganisms |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3125452C2 (en) * | 1981-06-29 | 1985-09-12 | Degussa Ag, 6000 Frankfurt | Process for detoxifying and lowering the COD and the BOD in continuous wastewater streams with changing contents of various oxidizable ingredients with hydrogen peroxide |
US5259962A (en) * | 1991-05-30 | 1993-11-09 | Later Roger C | Method and apparatus for decontamination of soils and other particulate materials |
DE4415911A1 (en) * | 1994-05-05 | 1995-11-09 | Linde Ag | Process for the treatment of a medium containing organic components |
-
1999
- 1999-11-30 US US09/451,293 patent/US6251290B1/en not_active Expired - Fee Related
-
2000
- 2000-11-20 WO PCT/US2000/031926 patent/WO2001039904A1/en active Application Filing
- 2000-11-20 AU AU16263/01A patent/AU1626301A/en not_active Abandoned
- 2000-11-20 CA CA002428725A patent/CA2428725C/en not_active Expired - Fee Related
-
2001
- 2001-03-15 US US09/809,396 patent/US20010030145A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20010030145A1 (en) | 2001-10-18 |
WO2001039904A1 (en) | 2001-06-07 |
WO2001039904B1 (en) | 2001-09-27 |
CA2428725C (en) | 2006-01-24 |
AU1626301A (en) | 2001-06-12 |
US6251290B1 (en) | 2001-06-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20191120 |